What glue to use for motor magnet?

[williamsoh]

Anybody have experience glueing the ZPower Z30A-800 motor magnet? What are the glue to be used.

[DebianDog]

Ummm good question

[Pinecone]

Probably not a For Sale question. :)

But for the CD motors I have wound, flexible CA seemed to be the best.

[williamsoh]

Flexible CA may work for a small motor, but for big motor does it worked?
Please offer yr valuable advise.. Appreciate it. Thanks

[Pinecone]

I have no idea what they use for the bigger motors. Most epoxies won't work because of the high temperatures.

But remember, for an outrunner motor, the force is lateral as the centrigfugal force is taken by the can. And larger motor means larger magnets, which means more surface area.

I would still try flexible CA.

But if you threw a magents, why? If defective, try to return it. If it overheated and degraded the glue, it is likely that the motor is pretty shot, as high temperatures cause the magnets to lose power and the motor power goes way down.

[williamsoh]

Thank for yr advise. may be u r rite tat the motor is overheated and degraded the glue. In fact I got this motor fr someone else, will try to fix it but if not I will return it.

[mudbogger2]

J.B. Weld works good on the larger motors.

You need to check the balance of the motor or it could give some nasty vibes if you get it out of balance with a lot of glue on one side.

[PDK]

I have used CA for my smaller motors. For the larger ones you can use a good quality 24hr epoxy which handles the added heat better than the 5min stuff. I have also used fibre glassing resin (polyester) thickened with baby powder. Magnets were tacked in with CA then the gaps filled with the resin.

Hope this helps
Phil

[tungym]

In addition, see if the surface of the neodym magnet is scratched much. Some motor manufacturer told me that those scratch marks on the magnet already signified the magnet is somehow degraded as the friction already overheat and partially magnetized the magnet at those "scratching" area.

I do not have a "Gauss" meter to prove it, but the "cogging" or a screw driver test may tell.

[forjer]

If I remember, I'll see what we use at work.

[forjer]

We use Loctite 7387 activator along with Loctite 334 then bake to cure.

I'll PM you more specifics.

[jcerantes11]

maybe CB weld i bet that works, i use that on mufflers too and many other stuff like wood i even tried cb weld on the cover off my foamy parkzone jet. Anyways how about using a mig welder just kidding. Try CB weld probably the best out there that would work then any other glue. Cb weld can last the heat for a long time. I used it to cover a hole on the muffler of my weed wacker.

[forjer]

You mean JB Weld?

[jcerantes11]

YUP, its the best!! Or atleast mine is. :thumbup: